+ mutex_unlock(&port->port_lock);
+ clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
+ return ret;
+}
+
+static void ehea_purge_sq(struct ehea_qp *orig_qp)
+{
+ struct ehea_qp qp = *orig_qp;
+ struct ehea_qp_init_attr *init_attr = &qp.init_attr;
+ struct ehea_swqe *swqe;
+ int wqe_index;
+ int i;
+
+ for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
+ swqe = ehea_get_swqe(&qp, &wqe_index);
+ swqe->tx_control |= EHEA_SWQE_PURGE;
+ }
+}
+
+static void ehea_flush_sq(struct ehea_port *port)
+{
+ int i;
+
+ for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
+ struct ehea_port_res *pr = &port->port_res[i];
+ int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
+ int k = 0;
+ while (atomic_read(&pr->swqe_avail) < swqe_max) {
+ msleep(5);
+ if (++k == 20)
+ break;
+ }
+ }
+}
+
+int ehea_stop_qps(struct net_device *dev)
+{
+ struct ehea_port *port = netdev_priv(dev);
+ struct ehea_adapter *adapter = port->adapter;
+ struct hcp_modify_qp_cb0 *cb0;
+ int ret = -EIO;
+ int dret;
+ int i;
+ u64 hret;
+ u64 dummy64 = 0;
+ u16 dummy16 = 0;
+
+ cb0 = (void *)get_zeroed_page(GFP_KERNEL);
+ if (!cb0) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
+ struct ehea_port_res *pr = &port->port_res[i];
+ struct ehea_qp *qp = pr->qp;
+
+ /* Purge send queue */
+ ehea_purge_sq(qp);
+
+ /* Disable queue pair */
+ hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
+ EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
+ cb0);
+ if (hret != H_SUCCESS) {
+ ehea_error("query_ehea_qp failed (1)");
+ goto out;
+ }
+
+ cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
+ cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
+
+ hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
+ EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
+ 1), cb0, &dummy64,
+ &dummy64, &dummy16, &dummy16);
+ if (hret != H_SUCCESS) {
+ ehea_error("modify_ehea_qp failed (1)");
+ goto out;
+ }
+
+ hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
+ EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
+ cb0);
+ if (hret != H_SUCCESS) {
+ ehea_error("query_ehea_qp failed (2)");
+ goto out;
+ }
+
+ /* deregister shared memory regions */
+ dret = ehea_rem_smrs(pr);
+ if (dret) {
+ ehea_error("unreg shared memory region failed");
+ goto out;
+ }
+ }
+
+ ret = 0;
+out:
+ free_page((unsigned long)cb0);
+
+ return ret;
+}
+
+void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
+{
+ struct ehea_qp qp = *orig_qp;
+ struct ehea_qp_init_attr *init_attr = &qp.init_attr;
+ struct ehea_rwqe *rwqe;
+ struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
+ struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
+ struct sk_buff *skb;
+ u32 lkey = pr->recv_mr.lkey;
+
+
+ int i;
+ int index;
+
+ for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
+ rwqe = ehea_get_next_rwqe(&qp, 2);
+ rwqe->sg_list[0].l_key = lkey;
+ index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
+ skb = skba_rq2[index];
+ if (skb)
+ rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
+ }
+
+ for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
+ rwqe = ehea_get_next_rwqe(&qp, 3);
+ rwqe->sg_list[0].l_key = lkey;
+ index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
+ skb = skba_rq3[index];
+ if (skb)
+ rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
+ }
+}
+
+int ehea_restart_qps(struct net_device *dev)
+{
+ struct ehea_port *port = netdev_priv(dev);
+ struct ehea_adapter *adapter = port->adapter;
+ int ret = 0;
+ int i;
+
+ struct hcp_modify_qp_cb0 *cb0;
+ u64 hret;
+ u64 dummy64 = 0;
+ u16 dummy16 = 0;
+
+ cb0 = (void *)get_zeroed_page(GFP_KERNEL);
+ if (!cb0) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
+ struct ehea_port_res *pr = &port->port_res[i];
+ struct ehea_qp *qp = pr->qp;
+
+ ret = ehea_gen_smrs(pr);
+ if (ret) {
+ ehea_error("creation of shared memory regions failed");
+ goto out;
+ }
+
+ ehea_update_rqs(qp, pr);
+
+ /* Enable queue pair */
+ hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
+ EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
+ cb0);
+ if (hret != H_SUCCESS) {
+ ehea_error("query_ehea_qp failed (1)");
+ goto out;
+ }
+
+ cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
+ cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
+
+ hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
+ EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
+ 1), cb0, &dummy64,
+ &dummy64, &dummy16, &dummy16);
+ if (hret != H_SUCCESS) {
+ ehea_error("modify_ehea_qp failed (1)");
+ goto out;
+ }
+
+ hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
+ EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
+ cb0);
+ if (hret != H_SUCCESS) {
+ ehea_error("query_ehea_qp failed (2)");
+ goto out;
+ }
+
+ /* refill entire queue */
+ ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
+ ehea_refill_rq2(pr, 0);
+ ehea_refill_rq3(pr, 0);
+ }
+out:
+ free_page((unsigned long)cb0);
+